Gaya APA

INDONESIA, D, O, M, A, E, R, O. (1999). MINING AND ENERGY YEARBOOK OF INDONESIA, 1998 (29th ed.). Indonesia: Departemen Pertambangan & Energi.

Gaya MLA

INDONESIA, DEPARTEMENT, OF, MINES, AND, ENERGY, REPUBLIC, OF. "MINING AND ENERGY YEARBOOK OF INDONESIA, 1998". 29th ed. Indonesia: Departemen Pertambangan & Energi, 1999. Text.